Folding filter

Abstract

The utility model relates to a folding type filter which comprises a shell and a filtering assembly, a cavity channel extending in the first direction is defined in the shell, an air inlet and an air outlet which are communicated with the cavity channel are formed in the side edge and the bottom of the shell respectively, and a cover plate is arranged on the top of the shell in an openable and closable mode; the filtering assembly comprises a mounting frame and at least one filtering piece, the mounting frame is detachably arranged in the cavity channel, the filtering piece comprises an activated carbon filter element, a first filtering plate and a second filtering plate, the first filtering plate and the second filtering plate are movably connected to form a filtering frame, and the filtering frame stretches across the mounting frame; activated carbon filter elements are laid in the middles of the first filter plate and the second filter plate. The filter frame can be detachably installed in the cavity channel of the shell, and the first filter plate and the second filter plate can be folded, so that when the filter efficiency is reduced, only the filter frame needs to be taken out of the cavity channel for replacement, overall replacement is not needed, the production cost is low, the effective service life is long, and the filter can be widely applied.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a folding filter. Background Art

[0002] Air filters are generally used for air purification in clean workshops, laboratories or clean rooms, or for dust removal of electronic, mechanical and communication equipment. At present, existing air filters are generally flat or cylindrical. For a flat multi-layer filter, its filtration area is small and the air purification rate is low, while the cylindrical air filter increases the filtration area. However, most of the current filters cannot be folded. For example, in the Chinese patent application with the application number CN202122634764.4, its filter component is set as an integral cylindrical shape. Although the filtration area and the air purification rate are increased, there are the following defects: First, when the filter is not in use, it cannot be folded and stored, occupying a large storage space; Second, after a period of use, when the activated carbon in the unilateral filter component gradually fills its own pores and fails during the adsorption process, or when the unilateral filter component is damaged and fails due to external factors, the entire filter component will fail, and the entire filter component needs to be replaced, reducing the overall service life of the filter component, wasting resources and increasing the replacement cost during the user's use process. Summary of the Utility Model

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a folding filter.

[0004] The present application provides a folding filter, including:

[0005] A housing, inside which a channel extending in a first direction is defined. An air inlet and an air outlet communicating with the channel are respectively provided on the side and bottom of the housing, and a cover plate for covering the channel is detachably provided on the top of the housing;

[0006] A filter component, which includes a mounting frame and at least one filter element. The mounting frame is detachably built in the channel. The filter element includes an activated carbon filter element, a first filter plate and a second filter plate. The first filter plate and the second filter plate are movably connected to form a filter frame, the filter frame straddles the mounting frame, and activated carbon filter elements are laid in the middle of the first filter plate and the second filter plate.

[0007] In a possible implementation manner, one end of the first filter plate close to the second filter plate is recessed inward to form a card slot, mounting holes are provided on both side walls of the card slot, one end of the second filter plate close to the first filter plate extends outward to form a card block, and mounting posts adapted to the mounting holes are provided at both ends of the card block.

[0008] In a possible implementation, openings are provided in the middle of the first filter plate and the second filter plate. An annular support ring is provided inside the opening, and the outer edge of the activated carbon filter element is fixedly connected to the surface of the support ring.

[0009] In a possible implementation, the mounting frame includes a first support plate and a second support plate that extend along the first direction and are spaced apart. One end of the first filter plate away from the second filter plate is connected to the inner wall of the first support plate, and one end of the second filter plate away from the first filter plate is connected to the inner wall of the second support plate.

[0010] In a possible implementation, chutes extending along the first direction are provided on the left and right inner walls of the housing. A plurality of guide balls are provided at intervals along the first direction on the side edges of the first support plate and the second support plate, so that the first support plate and the second support plate are detachably arranged in the cavity.

[0011] In a possible implementation, fixing blocks are provided at the bottoms of the first support plate and the second support plate, and a recess adapted to the fixing blocks is provided on the inner bottom of the cavity.

[0012] In a possible implementation, a threaded portion is provided at the top of the fixing block, fixing holes are provided at the bottoms of the first support plate and the second support plate, and internal threads matching the threaded portion are provided on the inner walls of the fixing holes.

[0013] In a possible implementation, the fixing block is made of a magnetic metal material, and a magnetic member for tightly attracting the fixing block is embedded in the recess.

[0014] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0015] The first filter plate and the second filter plate are movably connected to form a filter frame, and an activated carbon filter element is laid in the middle of the first filter plate and the second filter plate. Then, the filter frame is horizontally fixed on the mounting frame to form an integral body and placed into the cavity of the housing, so that the gas entering from the air inlet flows out from the air outlet after passing through the activated carbon filter element, realizing the filtration of the gas. The filter frame of this foldable filter can be detachably installed into the cavity of the housing, and the first filter plate and the second filter plate can be folded, so that when the filtration efficiency decreases, only the filter frame needs to be taken out of the cavity for replacement, without overall replacement, with low production cost and long effective service life, and can be widely applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings here are incorporated into the description and form a part of this description, showing embodiments in accordance with the present utility model, and are used together with the description to explain the principles of the present utility model.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the accompanying drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] In the accompanying drawings:

[0019] Figure 1 is a schematic structural diagram of a folding filter of the present utility model;

[0020] Figure 2 is an internal schematic diagram of a folding filter of the present utility model;

[0021] Figure 3 is an unfolded schematic diagram of a filter assembly in a folding filter of the present utility model;

[0022] Figure 4 is a folded schematic diagram of a filter assembly in a folding filter of the present utility model;

[0023] Figure 5 is a schematic structural diagram of a filter element in a folding filter of the present utility model;

[0024] Figure 6 is a schematic structural diagram of a fixing block in a folding filter of the present utility model.

[0025] Reference numerals in the drawings:

[0026] 10, housing; 11, air inlet; 12, air outlet; 20, mounting rack; 21, first support plate; 22, second support plate; 30, filter element; 31, first filter plate; 31a, card slot; 31b, mounting hole; 32, second filter plate; 32a, card block; 32b, mounting post; 33, activated carbon filter element; 40, fixing block; 50, guide ball; 60, depression; 70, magnetic part. Detailed implementation manners

[0027] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by terms such as "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings and are specific orientations for construction and operation, solely for the convenience of describing the present technical solution, rather than indicating that the indicated devices or elements must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0028] It should also be noted that unless otherwise clearly specified and defined, terms such as "install", "connect", "join", "fix", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or there may also be one or more intermediate elements. Terms such as "first", "second", "third", etc. are only for the convenience of describing the present technical solution and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are presented to thoroughly understand the embodiments of the present utility model. However, those skilled in the art should clearly understand that the present utility model can also be implemented in other embodiments without these specific details. In other cases, the detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present utility model.

[0030] Please refer to Figures 1 to 6, this application provides a foldable filter, including a housing 10 and a filter component. An internally defined channel extending in a first direction is formed inside the housing 10. An air inlet 11 and an air outlet 12 communicating with the channel are respectively provided on the side and bottom of the housing 10. A cover plate for covering the channel is detachably provided at the top of the housing 10. The filter component includes a mounting frame 20 and at least one filter element 30. The mounting frame 20 is detachably built into the channel. The filter element 30 includes an activated carbon filter element 33, a first filter plate 31, and a second filter plate 32. The first filter plate 31 and the second filter plate 32 are movably connected to form a filter frame, and the filter frame spans across the mounting frame 20. The activated carbon filter element 33 is laid in the middle of both the first filter plate 31 and the second filter plate 32.

[0031] For the foldable filter based on the above technical features, the first filter plate 31 and the second filter plate 32 are movably connected to form a filter frame, and the activated carbon filter element 33 is laid in the middle of both the first filter plate 31 and the second filter plate 32. Then the filter frame is fixed across the mounting frame 20 to form an integral body and placed into the channel of the housing 10, so that the gas entering from the air inlet 11 flows out from the air outlet 12 after passing through the activated carbon filter element 33, realizing the filtration of the gas. The filter frame of this foldable filter can be detachably installed into the channel of the housing 10, and the first filter plate 31 and the second filter plate 32 can be folded, so that when the filtration efficiency decreases, only the filter frame needs to be taken out of the channel for replacement, without the need for overall replacement, with low production cost and long effective service life, and can be widely applied.

[0032] In a possible implementation, a card slot 31a is formed by inward depression at one end of the first filter plate 31 close to the second filter plate 32. Mounting holes 31b are provided on both side walls of the card slot 31a. A card block 32a extends outward at one end of the second filter plate 32 close to the first filter plate 31. Mounting posts 32b adapted to the mounting holes 31b are provided at both ends of the card block 32a. In this way, the card block 32a of the second filter plate 32 is snapped into the card slot 31a, and at this time the mounting posts 32b are inserted into the mounting holes 31b, so that the first filter plate 31 and the second filter plate 32 can be unfolded or folded, facilitating subsequent storage when filtration is not required.

[0033] In a possible implementation, openings are provided in the middle of the first filter plate 31 and the second filter plate 32. An annular support ring is provided inside the opening. The outer edge of the activated carbon filter element 33 is fixedly connected to the surface of the support ring. In this way, the outer edge of the activated carbon filter element 33 can be abutted against the surface of the support ring, and then fixed by fasteners (such as screws, bolts, etc.), so as to fix the activated carbon filter element 33 on the first filter plate 31 and the second filter plate 32; when the filtration of the activated carbon filter element 33 is close to saturation and the filtration efficiency is low, loosen the fasteners, and then lift the activated carbon filter element 33 away from the first filter plate 31 or the second filter plate 32, and the disassembly and replacement of the activated carbon filter element 33 can be realized. The structure is simple and the disassembly and assembly are convenient.

[0034] In a possible implementation, the mounting frame 20 includes a first support plate 21 and a second support plate 22 that extend along the first direction and are spaced apart. One end of the first filter plate 31 away from the second filter plate 32 is connected to the inner wall of the first support plate 21, and one end of the second filter plate 32 away from the first filter plate 31 is connected to the inner wall of the second support plate 22.

[0035] In a possible implementation, sliding grooves extending along the first direction are provided on the left and right inner walls of the housing 10. A plurality of guide balls 50 are provided at intervals along the first direction on the side edges of the first support plate 21 and the second support plate 22, so that the first support plate 21 and the second support plate 22 are detachably arranged in the cavity.

[0036] Exemplarily, when filtration is required, the first support plate 21 and the second support plate 22 are pulled in opposite directions to cut the first filter plate 31 and the second filter plate 32 from the folded state to the unfolded state, and then the first support plate 21 and the second support plate 22 are placed into the housing 10 from the top. Since sliding grooves are provided on the left and right inner walls of the housing 10, a plurality of guide balls 50 are provided on the sides of the first support plate 21 and the second support plate 22, so that the guide balls 50 extend into the sliding grooves and slide along the extension direction of the sliding grooves, so that the filter rack can be quickly placed into or taken out of the cavity. The structure is simple, convenient for disassembly, assembly and filter element replacement, and the outer frame is fully utilized.

[0037] In a possible implementation, fixing blocks 40 are provided at the bottoms of the first support plate 21 and the second support plate 22, and recessed positions 60 adapted to the fixing blocks 40 are provided on the inner bottom of the cavity. In this way, it can be ensured that after the first support plate 21 and the second support plate 22 are placed into the cavity, the fixing blocks 40 are snapped into the recessed positions 60, so as to play a role of limiting and fixing and prevent loosening during use.

[0038] In a possible implementation, a threaded portion is provided at the top of the fixing block 40, and fixing holes are formed at the bottoms of the first support plate 21 and the second support plate 22. An internal thread that matches the threaded portion is provided on the inner wall of the fixing hole. In this way, the threaded portion of the fixing block 40 is inserted into the fixing hole to be fixed to the bottoms of the first support plate 21 and the second support plate 22 by means of threaded connection. The structure is simple and the disassembly and assembly are convenient.

[0039] In a possible implementation, the fixing block 40 is made of a magnetic metal material, and a magnetic member 70 for tightly attracting the fixing block 40 is embedded in the recess 60. In this way, after the fixing block 40 is snapped into the recess 60, since the fixing block 40 is made of a magnetic metal material and the magnetic member 70 is embedded in the recess 60, the fixing block 40 is tightly attracted in the recess 60, thereby preventing the first support plate 21 and the second support plate 22 from moving randomly and affecting normal filtration.

[0040] It can be understood that the above embodiments only represent the preferred implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A folded filter, characterized in that: include: A shell, wherein a cavity extending along a first direction is defined in the interior thereof, an air inlet and an air outlet connected to the cavity are respectively provided on the side and bottom of the shell, and a cover plate for covering the cavity is openably provided on the top of the shell; A filter assembly, comprising a mounting frame and at least one filter element, wherein the mounting frame is detachably built into the cavity, the filter element comprises an activated carbon filter element, a first filter plate and a second filter plate, the first filter plate and the second filter plate are movably connected to form a filter frame, the filter frame spans across the mounting frame, and the middle parts of the first filter plate and the second filter plate are both provided with activated carbon filter elements.

2. The folded filter according to claim 1, characterized in that: One end of the first filter plate close to the second filter plate is recessed inward to form a slot, and both side walls of the slot are provided with mounting holes. One end of the second filter plate close to the first filter plate extends outward to form a block, and both ends of the block are provided with mounting columns adapted to the mounting holes.

3. The folded filter according to claim 1, characterized in that: The first filter plate and the second filter plate are both provided with openings in the middle, and an annular support ring is provided inside the opening, and the outer edge of the activated carbon filter element is fixedly connected to the surface of the support ring.

4. The folded filter according to claim 1, characterized in that The mounting frame includes a first support plate and a second support plate extending along the first direction and spaced apart. An end of the first filter plate away from the second filter plate is connected to an inner wall of the first support plate. An end of the second filter plate away from the first filter plate is connected to an inner wall of the second support plate.

5. The folded filter according to claim 4, characterized in that: The left and right inner walls of the shell have sliding grooves extending along the first direction, and the side edges of the first support plate and the second support plate are provided with a plurality of guide balls at intervals along the first direction, so that the first support plate and the second support plate can be detachably arranged in the cavity.

6. The folded filter according to claim 4, characterized in that: The bottoms of the first support plate and the second support plate are provided with fixing blocks, and the inner bottom of the cavity is provided with a recessed position matched with the fixing blocks.

7. The folded filter according to claim 6, characterized in that: A threaded portion is disposed on the top of the fixing block, and fixing holes are formed at the bottoms of the first supporting plate and the second supporting plate. An internal thread matching the threaded portion is disposed on the inner wall of the fixing hole.

8. The folded filter according to claim 6, characterized in that The fixing block is made of a magnetic metal material, and a magnetic piece for sucking the fixing block is embedded in the recessed position.

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